docs: def clean_form_template(self):
          """ Check if template exists """
          form_template = self.cleaned_data.get('form_template', '')
          if form_template:
              try:
                  get_template(form_template)
              except TemplateDoesNotExist:
                  msg = _('Selected Form Template does not exist.')
                  raise forms.ValidationError(msg)
          return form_template